{"created":"2023-05-15T12:35:06.243136+00:00","id":3931,"links":{},"metadata":{"_buckets":{"deposit":"37a5e148-6620-4d13-92a0-411f09837d14"},"_deposit":{"created_by":3,"id":"3931","owners":[3],"pid":{"revision_id":0,"type":"depid","value":"3931"},"status":"published"},"_oai":{"id":"oai:nitech.repo.nii.ac.jp:00003931","sets":["31"]},"author_link":["11304","8540"],"item_10001_alternative_title_24":{"attribute_name":"その他（別言語等）のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"キョクセイギョ　IIRガタ　ADF　ノ　イチケイシキ　：　ドクリツ　セイギョ　サレル　ヘイレツ　２ジ　IIRガタ　ADF　ニヨル　オンキョウ　エコー　キャンセラ"},{"subitem_alternative_title":"A pole-controlled acoustic echo canceler by means of parallel connected independent second order IIR ADFs"}]},"item_10001_biblio_info_28":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1988-02-20","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"2","bibliographicPageEnd":"403","bibliographicPageStart":"395","bibliographicVolumeNumber":"J71-A","bibliographic_titles":[{"bibliographic_title":"電子通信学会論文誌. A"}]}]},"item_10001_description_36":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"音響エコーを除去することを目的としたIIR形エコーキャンセラの構成法を提案した．本エコーキャンセラは，2次のIIR形適応ディジタルフィルタ（ADF）の並列接続によって構成される．その特徴は，IIR形ADFで最も大きい課題である安定性が保証される点，各2次IIR形ADFがそれぞれ独立に制御される点，各2次IIR形ADFごとに誤差検出を行う点，音響エコー経路の有する遅延を効率的に実現する点などにある．次に，3ステップからなるエコーキャンセラの制御法を説明した．ステップ1でADFの極を略配置した後，ステップ2の零点制御を行いながら，ステップ3の極の微小制御を行う方式である．更に，本エコーキャンセラの制御動作のシミュレーション結果を示し，極の制御性能および各2次IIR形 ADFの独立性について検討した．その結果，エコー経路の有する極の近接度により独立性に影響を受けることが明らかとなった．また，制御により高いエコー消去特性が得られた．","subitem_description_type":"Other"}]},"item_10001_description_38":{"attribute_name":"フォーマット","attribute_value_mlt":[{"subitem_description":"application/pdf","subitem_description_type":"Other"}]},"item_10001_full_name_27":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{},{}],"names":[{"name":"Takumi, Ichi"}]}]},"item_10001_publisher_29":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"Institute of Electronics, Information and Communication Engineers"}]},"item_10001_source_id_30":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"09135707","subitem_source_identifier_type":"ISSN"}]},"item_10001_source_id_32":{"attribute_name":"書誌レコードID（NCID）","attribute_value_mlt":[{"subitem_source_identifier":"AN10013345","subitem_source_identifier_type":"NCID"}]},"item_10001_version_type_33":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"内匠, 逸"},{"creatorName":"タクミ, イチ","creatorNameLang":"ja-Kana"}],"nameIdentifiers":[{},{}]},{"creatorNames":[{"creatorName":"畑, 雅恭"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2017-01-23"}],"displaytype":"detail","filename":"J71-A_395.pdf","filesize":[{"value":"826.0 kB"}],"format":"application/pdf","license_note":"Copyright(c)1988 IEICE　http://search.ieice.org/index.html","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"本文_fulltext","url":"https://nitech.repo.nii.ac.jp/record/3931/files/J71-A_395.pdf"},"version_id":"5ec5ee15-8d3c-4e6b-a244-f83324d5917c"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"極制御IIR形ADFの一形式--独立制御される並列2次IIR 形ADFによる音響エコ-キャンセラ","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"極制御IIR形ADFの一形式--独立制御される並列2次IIR 形ADFによる音響エコ-キャンセラ"}]},"item_type_id":"10001","owner":"3","path":["31"],"pubdate":{"attribute_name":"公開日","attribute_value":"2013-06-25"},"publish_date":"2013-06-25","publish_status":"0","recid":"3931","relation_version_is_last":true,"title":["極制御IIR形ADFの一形式--独立制御される並列2次IIR 形ADFによる音響エコ-キャンセラ"],"weko_creator_id":"3","weko_shared_id":3},"updated":"2023-05-16T14:27:17.015215+00:00"}